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Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Details)
$ in Millions
Sep. 30, 2023
USD ($)
Amortization expense related to intangible assets:  
Remainder of 2023 $ 2.8
2024 11.4
2025 11.3
2026 11.3
2027 10.9
Thereafter 25.6
Net book value $ 73.3